42145199 has 4 divisors (see below), whose sum is σ = 42168936. Its totient is φ = 42121464.

The previous prime is 42145153. The next prime is 42145241. The reversal of 42145199 is 99154124.

42145199 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 42145199 - 2¹² = 42141103 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42145099) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8969 + ... + 12834.

It is an arithmetic number, because the mean of its divisors is an integer number (10542234).

Almost surely, 2^42145199 is an apocalyptic number.

42145199 is a deficient number, since it is larger than the sum of its proper divisors (23737).

42145199 is a wasteful number, since it uses less digits than its factorization.

42145199 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23736.

The product of its digits is 12960, while the sum is 35.

The square root of 42145199 is about 6491.9333792022. The cubic root of 42145199 is about 348.0027717003.

The spelling of 42145199 in words is "forty-two million, one hundred forty-five thousand, one hundred ninety-nine".